diff --git a/pkgs/development/libraries/haskell/iCalendar/default.nix b/pkgs/development/libraries/haskell/iCalendar/default.nix
index 33a5ba4bea6e..867474fdfb93 100644
--- a/pkgs/development/libraries/haskell/iCalendar/default.nix
+++ b/pkgs/development/libraries/haskell/iCalendar/default.nix
@@ -18,5 +18,6 @@ cabal.mkDerivation (self: {
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
     maintainers = with self.stdenv.lib.maintainers; [ ocharles ];
+    broken = true;
   };
 })